By default, the C1TimeEditor control doesn't allow users to enter null values, but you can force the control to accept a null value by setting the AllowNull property to True. In this topic, you will learn how to set the AllowNull property to True in the designer, in XAML, and in code.
In the Designer
Complete the following steps:
1. Click the C1TimeEditor control once to select it.
2. In the Properties window, select the AllowNull check box.
In XAML
To allow null values, place AllowNull="True" to the <my:C1TimeEditor> tag so that the markup resembles the following:
<my:C1TimeEditor AllowNull="True"/>
In Code
Complete the following steps:
1. Open the Window1.xaml.cs page.
2. Place the following code beneath the InitializeComponent() method:
C1TimeEditor1.AllowNull = True
• C#
c1TimeEditor1.AllowNull = true;
3. Run the project.
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